U-shape step stool



FIG. 1 is a top view of a u-shape step stool showing my new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a right-side elevational view thereof;

FIG. 4 is a left-side elevational view thereof;

FIG. 5 is a front, elevational view thereof; and,

FIG. 6 is a rear, elevational view thereof. 

The ornamental design for a u-shape step stool, as shown. 